CN107641370A - A kind of preparation method of paint stripper - Google Patents
A kind of preparation method of paint stripper Download PDFInfo
- Publication number
- CN107641370A CN107641370A CN201711155331.2A CN201711155331A CN107641370A CN 107641370 A CN107641370 A CN 107641370A CN 201711155331 A CN201711155331 A CN 201711155331A CN 107641370 A CN107641370 A CN 107641370A
- Authority
- CN
- China
- Prior art keywords
- parts
- paint stripper
- paraffin
- formic acid
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of preparation method of paint stripper, comprise the following steps by weight ratio：S1, by DBE mixed dibasic acids ester, propylene glycol monomethyl ether and paraffin mix, heating it is molten to transparent, without block objects, obtain paraffin molten mixture；S2, by solvent naphtha, dimethyl carbonate add reaction cylinder, heat while stirring；S3, stirring be incubated 36~42 DEG C of states under, add paraffin molten mixture, be dispersed to well mixed；S4, methanol, dichloromethane are added, insulation adds formic acid microcapsules after being uniformly dispersed, emulsifying agent continues to disperse；S5, thickener, aversive agent are added, insulation is dispersed to uniformly, and filtered discharge produces paint stripper.Using paint stripper made from above technical scheme, there is advantages below：1. by the dual microencapsulation of formic acid, avoid formic acid from corroding iron flask, eliminate corrosion failure hidden danger；2. preferably can fast vaporizing heat absorption propellant, reduce Coated Surface Temperature, cooperateed with paraffin, thickener and slow down product volatility and turnover rate etc..
Description
Technical field
The present invention relates to a kind of coating or paint film clearance technique, more particularly to a kind of steady quality, rate of volatilization it is slow, can subtract
The preparation method of the clean paint stripper of slow vertical plane and the loss of inclined-plane paint stripper, efficient depainting, residue easy cleaning.
Background technology
Coating is that one kind is coated on body surface and can form film, has protection, decoration, mark and other special works
With.With China's economic development, the progress of science and technology, coating will provide more and more perfect, stronger and stronger in more aspects
Function.But there is damage, coating aging in use in coating, or because of Individualized Pursuit aesthetics, function etc. original
Because needing removing, application again.
Remove a variety of methods that have of old coating, including Physical and chemical method.Physical includes abrading using mechanical means
The coating of matrix surface, the coating of pure color coating, laser treatment method, flame ablation method and giant douche etc..Comparatively speaking,
Chemical method is more commonly used.Chemical method is to permeate paint film using paint stripper, dissolve or reacted with paint film, is removed so as to reach
The effect of coating or surface paint.Paint stripper can be divided into alkali paint remover, acid paint stripper and solvent stripper according to composition.
At present, solvent stripper is most common one kind, and it mainly has alkyl chloride hydro carbons, phenmethylol class, crassitude ketone and ester
Class etc., the type paint stripper make paint film or coating and matrix quick separating using solvent covering, infiltration and dissolution.Solvent
Type paint stripper is typically made up of main solvent, cosolvent, activator, volatilization inhibitor and other auxiliary agents.
The chlorinated hydrocarbons paint stripper being formulated using dichloromethane, paraffin as main component, water stamp paint stripper is commonly called as, it is main
It is used to remove acrylic paint, nitrate paint, alkyd paint, polyurethane, PART EPOXY paint and low-temperature setting two-component paint, has de-
Paint efficiency high feature.But for some epoxy-based lacquers and baking finish for car, the paint removing effect of chlorinated hydrocarbons paint stripper is poor, especially for
The depainting of vertical plane, oblique paint film, it is big not only exist paint stripper turnover rate, and paint removal efficiency is worse.
In order to improve the efficiency of depainting, it is molten on the one hand to add some electrophilicitys during chlorinated hydrocarbons paint stripper is manufactured
Agent-activator（Such as formic acid）, with the macromolecular chain segment that accelerates the failure, strengthen infiltration and swelling action of the main solvent to coating, play
Accelerate the effect of depainting.It is well known that the paint stripper overwhelming majority on the market uses tinplate to add as packing material in formula
Enter organic acid for activating agent, long time stored meeting corrosion tank, quality, potential safety hazard be present.
On the other hand to reduce or preventing the volatilization of the dichloromethane of main solvent, time enough can stops simultaneously
Ooze in people's old coating film, paint blister or dissolving have been stung, usually add paraffin as the slow agent of volatilization resistance.However, paraffin is in depainting
During, the surface of matrix is easily remained in, adhesive force of the new enamelled coating to matrix can be influenceed.Therefore, using de- with paraffin
When painting agent, it is necessary to thoroughly clean surface of bottom material, the paraffin residual is fully erased, can application coating material again.
Technical research disclosed in existing paint stripper is a lot.CN201610712968.6 discloses a kind of low volatility depainting
Agent, use phenmethylol, methanol, hydroxyethylpropyl cellulose, ethyl cellulose, Methyl cellulose, formic acid, calgon, the erosion of vulva
Agent, polyxyethylated alkylolamides and Xin Kui acid glycerides are made, and have the characteristics that paint stripping rate is fast, effect is good, toxicity is low；
CN201510751796.9 discloses stable paint stripper of a kind of environmental protection and preparation method thereof, uses butyl acrylate, dichloromethane
Alkane, diethyl carbonate, turpentine oil, methanol, formic acid, BTA, dimethyl sulfoxide (DMSO), calcium chloride, neopelex,
Hydrogen peroxide, paraffin, lucite powder, water-soluble cellulose, distilled water and stabilization aid are made, and have environmental protection, paint removal efficiency
The characteristics of height, property are stable, volatility is small；（Bear gold equality, " development of efficient paint remover "《Modern coatings and application》, 2005
03 phase of year, P7~9）Remover recipe is disclosed, uses ethanol, phosphoric acid, hydrofluoric acid, paraffin, benzene, dichloromethane and acetone system
, there is efficient, low volatilization, inexpensive.
Above-mentioned documents emphasis solves to improve paint removal efficiency and reduces volatile technological deficiency, but is not directed to how to keep away
Exempt from or prevent organic acid corrosion tank, eliminate quality, potential safety hazard；Also do not disclose and improve vertical plane, the depainting of inclined-plane paint film, with
And the removing problem of residual paraffin.
As can be seen here, exploitation one kind has steady quality, safe, rate of volatilization is slow, efficient depainting and residue are easy
Clean feature is removed, can slow down and construct in the paint stripper turnover rate of vertical plane, inclined-plane paint film, workmen can be prompted to carry out construction
The paint stripper of protection has very big economy and market significance.
The content of the invention
It is an object of the present invention to provide a kind of preparation method of paint stripper.
According to an aspect of the invention, there is provided a kind of preparation method of paint stripper, by weight ratio including following
Step：
S1, paraffin pretreatment, by 8.0~15.0 parts of DBE mixed dibasic acids esters, 2.0~5.0 parts of propylene glycol monomethyl ethers and 0.8~
The mixing of 2.2 parts of paraffin, heats 86~110 DEG C, dissolve each other to estimate it is transparent, without block objects, that is, obtain paraffin molten mixture；
S2,1.5~3.5 parts of solvent naphthas, 18.0~28.0 parts of dimethyl carbonates are added into reaction cylinders, it is heated to 36 while stirring~
42℃；
S3, in the case where stirring and being incubated 36~42 DEG C of states, add paraffin molten mixture, disperse 12~20min to well mixed；
S4,3.5~10.0 parts of methanol, 33.0~48.0 parts of dichloromethane are added, after 35~42 DEG C of insulation is uniformly dispersed, added
3.0~8.0 parts of formic acid microcapsules, 1.5~3.5 parts of emulsifying agents continue scattered 5~10min；
S5,1.6~3.5 parts of thickeners, 0.001~0.005 part of aversive agent are added, be incubated 35~42 DEG C of scattered 5~10min to equal
Even, filtered discharge produces paint stripper.
In some embodiments, the paint stripper after filtering can also be poured into the step S5 in inhalator jar ,-
Vacuumized under 0.04MPa~-0.08MPa vacuums, be put into valve and seal, filled propellant, load onto head and obtain aerosol
Type paint stripper.
In some embodiments, the propellant is at least two in carbon dioxide, HFO-1234yf, HFO-1234ze
Kind, by weight ratio, the dosage of propellant accounts for the 15~28% of paint stripper total amount.Thus, it is ensured that product of the present invention was being constructed
Propellant fast vaporizing absorbs heat in journey, reduces the evaporation rate for by depainting workpiece surface temperature, being advantageous to slow down solvent, is easy to molten
Agent infiltration, swelling paint film, improve paint removing effect；Using double push technologies, ensure that product has atomizing effect is good, emission rate is high etc.
Feature.
In above step, 35~42 DEG C are incubated, to prevent paraffin from occurring precipitation, layering less than 20 DEG C because of environment temperature
Phenomenon.
The DBE mixed dibasic acids ester, its main component are dimethyl succinate, dimethyl glutarate, adipic acid diformazan
Ester, it is nontoxic, water white transparency liquid, has the fragranced of light ester, is a kind of biodegradable environment protection type high-boiling-point of energy
Solvent.There is fabulous dissolving power simultaneously, with polyurethane resin, acrylic resin, polyester resin, alkyd resin, epoxy resin
It is good Deng intermiscibility, greasy dirt and dissolving paint film can be effectively eliminated.
The solvent naphtha is the composition of 120# solvent naphthas and 200# solvent naphthas, by weight ratio, 120# solvent naphthas：
200# solvent naphtha=1:1~2.5.
In certain embodiments, the dichloromethane has the spy that molecular weight is small, penetrating power is strong as one of main solvent
Property, can rapid osmotic to the polymer segment gap of film high polymer, and coating is expanded to original 3~4 times, during expansion
Pressure and tension force make paint film be come off from ground.
In some embodiments, the methanol is as cosolvent, with middle high boiling solvent HBS, solvent naphtha, ethylene glycol phenyl
Ether, propylene glycol monomethyl ether are collectively forming azeotropic mixture, and main solvent can be cooperateed with to be fully infiltrated into film, accelerate paint stripping rate.
The formic acid microcapsules are solid formic acid bilayered microcapsule, and its core is matched somebody with somebody by weight by formic acid and curing agent urea
Than for 1:1.5 solid formic acids being formulated；Wall material first layer is ethyl cellulose, and the wall material second layer is sodium alginate.
The preparation method of the formic acid microcapsules, by weight ratio：
A. 5~8 parts of toluene, 1.5 parts of ethanol are added in the three-necked flask with reflux, 70~75 DEG C of waters bath with thermostatic control,
Under 300~500r/min rotating speeds, it is slowly added to 7~10 parts of ethyl celluloses and is dispersed to be completely dissolved, continues scattered 5~10min
Obtain dispersion liquid；Then the mixture for entering 45 parts of formic acid and curing agent urea is slowly added into dispersion liquid；In stirring
Lower slow non-solvent petroleum ether to the ethyl cellulose that adds condenses, and stops heating；Stand, naturally cool to room temperature, filtering, washing,
Drying, that is, obtain the microcapsules of ethyl cellulose cladding.
B. in the three-necked flask 20 parts of water added, 60 DEG C is heated, 6 parts of sodium alginates is slowly added to while stirring, treats sea
After mosanom is completely dissolved, add the microcapsules of 18 parts of ethyl celluloses cladding, continue to stir 10min, stop heating, cooling,
Filtering, drying obtain sodium alginate and the formic acid microcapsules of ethyl cellulose double-coating.
In some embodiments of the invention, by the way that formic acid and curing agent urea are configured into solid formic acid, thus, avoid
Formic acid reacts with first layer wall material；Using double wall core, effectively prevent formic acid microcapsules from being dissolved by Organic Alcohol, ether and halogenated hydrocarbons,
And formic acid corrosion metal can is avoided, quality, potential safety hazard are eliminated, improves the bin stability of product.
Solid formic acid bilayered microcapsule is opened because being squeezed during use, and solid formic acid is dissolved in organic solvent, formic acid point
Son penetrates into and the macromolecular chain segment that accelerates the failure, and strengthens infiltration and swelling action of the main solvent to coating, plays the work for accelerating depainting
With.
The paraffin is at least one of fully refined paraffin wax, OP waxes, Tissuemat E.
Preferably, the paraffin is at least one of fully refined paraffin wax, OP waxes, and the wherein fusing point of fully refined paraffin wax is 56
~60 DEG C, the fusing point of OP waxes is 79~83 DEG C.
Paraffin is dispersed in paint stripper after melting as volatilization inhibitor, when being sprayed at film coated surface, can form envelope
Layer is closed, effective ground resistance delays the volatilization of low boiling point solvent, the macromolecular chain for making it have time enough to be fully infiltrated into film high polymer
Intersegmental gap, and coating expanded, dissolve, come off.
The emulsifying agent has excellent emulsification and dispersive property to be triethanolamine oleate, to mineral oil, vegetable oil,
Wax dirt etc. has preferable emulsifiability.
The thickener is that G1701 oil thickeners and Degussa hydrophily A300 gas-phase silica thickeners are risen by section of the U.S.
Composition, by weight ratio, G1701 oil thickeners：A300 gas-phase silica=2~3:1.Thus, paint stripper is improved
Viscosity, increase its time of contact in vertical plane, inclined-plane paint film, improve the utilization rate of this product, reduce waste.
The aversive agent is Denatonium Benzoate.Thus, product special odor of the present invention is assigned, to prevent people from drawing because eating by mistake
The poisoning thing risen, workmen is prompted to carry out construction protection.
Paint remover products prepared by the present invention have the advantages that：
1. paint stripper prepared by the present invention by the dual microencapsulation of formic acid, avoids formic acid corrosion tinplate inhalator jar, eliminate rotten
The potential safety hazard in eating thrown hole, improve the stability of product；
2. paint stripper prepared by the present invention preferably can fast vaporizing propellant, using propellant fast vaporizing inhale thermal property,
Reduce by the temperature of depainting coating surface, while volatilization and the inclined-plane stream that slow down low boiling point solvent are cooperateed with paraffin, thickener
Mistake rate, makes small molecule solvent have time enough to be fully infiltrated into, dissolve, expand, come off paint film, suitable for improving vertical plane, tiltedly
The paint removing effect of coating materials, while have using flexible, simplicity concurrently, the features such as atomizing effect is good；
3. paint stripper prepared by the present invention adds oleic acid triethanolamine amine emulsifier, help to clean up in residual wax, do not influence new
Adhesive force of the enamelled coating to matrix；
4. paint stripper prepared by the present invention adds aversive agent, product peculiar taste is assigned, in preventing people because caused by eating by mistake
Malicious thing, workmen is prompted to carry out construction protection.
Embodiment
The present invention will be described for following examples, but the present invention is not limited to these examples system.To the present invention's
Embodiment is modified or carries out equivalent substitution to some technical characteristics, without departing from the spirit of the present invention program,
It all should cover among the claimed technical scheme scope of the present invention.
Embodiment 1
A kind of preparation method of paint stripper, comprises the following steps by weight ratio：
S1, paraffin pretreatment, 8 parts of DBE mixed dibasic acids esters, 4.997 parts of propylene glycol monomethyl ethers and 2.2 parts of fully refined paraffin wax are mixed
Close, heat 86~110 DEG C, dissolve each other to estimate it is transparent, without block objects, that is, obtain paraffin molten mixture；
S2,1.8 parts of 200# solvent naphthas, 1 part of 120# solvent naphtha, 25 parts of dimethyl carbonates are added into reaction cylinders, heated while stirring
To 36~42 DEG C；
S3, in the case where stirring and being incubated 36~42 DEG C of states, add paraffin molten mixture, disperse 12~20min to well mixed；
S4,10 parts of methanol, 33 parts of dichloromethane are added, after 35~42 DEG C of insulation is uniformly dispersed, add 8 parts of formic acid microcapsules, 2.5
Part oleic acid triethanolamine amine emulsifier continues scattered 5~10min；
S5,2.5 parts of G1701 oil thickeners, 1 part of A300 gas-phase silica thickener are added, 0.003 part of Denatonium Benzoate, protected
For the scattered 5~10min of 35~42 DEG C of temperature to uniform, filtered discharge produces paint stripper.
In the present embodiment, 100 parts of paint strippers after filtering can also be poured into the step S5 in inhalator jar ,-
Vacuumized under 0.04MPa~-0.08MPa vacuums, be put into valve and seal, 6 parts of carbon dioxide of filling, 22 parts of HFO-1234yf
Propellant, load onto head and obtain aerial fog type paint stripper.
In other embodiments, propellant can also be 8 parts of carbon dioxide, 12 parts of HFO-1234yf, or be 10 parts of dioxies
Change carbon, 5 parts of HFO-1234yf.
The preparation method of the 8 parts of formic acid microcapsules added in step s 4, comprises the following steps：
A. 5 parts of toluene, 1.5 parts of ethanol are added in the three-necked flask with reflux, 70~75 DEG C of waters bath with thermostatic control, 300
Under~500r/min rotating speeds, it is slowly added to 7 parts of ethyl celluloses and is dispersed to be completely dissolved, continues scattered 5~10min and disperseed
Liquid；Then the mixture for entering 18 parts of formic acid and 27 parts of curing agent urea is slowly added into dispersion liquid；Delay under stirring
Add non-solvent petroleum ether to ethyl cellulose to condense, stop heating；Stand, naturally cool to room temperature, filtering, washing, drying,
Obtain the microcapsules of ethyl cellulose cladding.
B. in the three-necked flask 20 parts of water added, 60 DEG C is heated, 6 parts of sodium alginates is slowly added to while stirring, treats sea
After mosanom is completely dissolved, add the microcapsules of 18 parts of ethyl celluloses cladding, continue to stir 10min, stop heating, cooling,
Filtering, drying obtain sodium alginate and the formic acid microcapsules of ethyl cellulose double-coating.
Embodiment 2
A kind of preparation method of paint stripper, comprises the following steps by weight ratio：
S1, paraffin pretreatment, 10 parts of DBE mixed dibasic acids esters, 3.998 parts of propylene glycol monomethyl ethers and 1.2 parts of OP waxes are mixed, added
Heat 86~110 DEG C, dissolve each other to estimate it is transparent, without block objects, that is, obtain paraffin molten mixture；
S2,2.5 parts of 200# solvent naphthas, 1 part of 120# solvent naphtha, 21 parts of dimethyl carbonates are added into reaction cylinders, heated while stirring
To 36~42 DEG C；
S3, in the case where stirring and being incubated 36~42 DEG C of states, add paraffin molten mixture, disperse 12~20min to well mixed；
S4,7 parts of methanol, 42 parts of dichloromethane are added, after 35~42 DEG C of insulation is uniformly dispersed, add 5 parts of formic acid microcapsules, 3.5
Part oleic acid triethanolamine amine emulsifier continues scattered 5~10min；
S5,2.1 parts of G1701 oil thickeners of addition, 0.7 part of A300 gas-phase silica thickener, 0.002 part of Denatonium Benzoate,
For the scattered 5~10min of 35~42 DEG C of insulation to uniform, filtered discharge produces paint stripper.
In the present embodiment, 100 parts of paint strippers can also be filled in the step S5 in inhalator jar, vacuumize, puts
After valve and sealing, 6 parts of carbon dioxide of filling, 22 portions of HFO-1234ze propellants, load onto head and can obtain aerial fog type depainting
Agent.
In other embodiments, propellant can also be 8 parts of carbon dioxide, 12 parts of HFO-1234ze, or be 10 parts of dioxies
Change carbon, 5 parts of HFO-1234ze.
The preparation method of the 5 parts of formic acid microcapsules added in step s 4, comprises the following steps：Except toluene selects 8 parts, second
From 9 especially, remaining component is identical with the preparation method of formic acid microcapsules in embodiment 1 for base cellulose.
Embodiment 3
A kind of preparation method of paint stripper, comprises the following steps by weight ratio：
S1, paraffin pretreatment, by 12 parts of DBE mixed dibasic acids esters, 2.996 parts of propylene glycol monomethyl ethers and 0.7 part of fully refined paraffin wax,
The mixing of 1.2 parts of OP waxes, heats 86~110 DEG C, dissolve each other to estimate it is transparent, without block objects, that is, obtain paraffin molten mixture；
S2,1 part of 200# solvent naphtha, 0.5 part of 120# solvent naphtha, 18 parts of dimethyl carbonates are added into reaction cylinders, heated while stirring
To 36~42 DEG C；
S3, in the case where stirring and being incubated 36~42 DEG C of states, add paraffin molten mixture, disperse 12~20min to well mixed；
S4, add 8 parts of methanol, 48 parts of dichloromethane, insulation 35~42 DEG C be uniformly dispersed after, add 3 parts of formic acid microcapsules, 3 parts
Oleic acid triethanolamine amine emulsifier continues scattered 5~10min；
S5,1.1 parts of G1701 oil thickeners of addition, 0.5 part of A300 gas-phase silica thickener, 0.004 part of Denatonium Benzoate,
For the scattered 5~10min of 35~42 DEG C of insulation to uniform, filtered discharge produces paint stripper.
In the present embodiment, 100 parts of paint strippers can also be filled in the step S5 in inhalator jar, vacuumize, puts
After valve and sealing, 6 parts of carbon dioxide of filling, 22 portions of HFO-1234yf propellants, load onto head and can obtain aerial fog type depainting
Agent.
In other embodiments, propellant can also be 8 parts of carbon dioxide, 12 parts of HFO-1234yf, or be 10 parts of dioxies
Change carbon, 5 parts of HFO-1234yf.
The preparation method of the 3 parts of formic acid microcapsules added in step s 4, comprises the following steps：Except toluene selects 7 parts, second
From 10 especially, remaining component is identical with the preparation method of formic acid microcapsules in embodiment 1 for base cellulose.
Embodiment 4
A kind of preparation method of paint stripper, comprises the following steps by weight ratio：
S1, paraffin pretreatment, 15 parts of DBE mixed dibasic acids esters, 2 parts of propylene glycol monomethyl ethers and 0.8 part of OP wax are mixed, heating 86
~110 DEG C, dissolve each other to estimate it is transparent, without block objects, that is, obtain paraffin molten mixture；
S2,1.1 parts of 200# solvent naphthas, 1.1 parts of 120# solvent naphthas, 27.997 parts of dimethyl carbonates are added to reaction cylinders, side stirring
While it is heated to 36~42 DEG C；
S3, in the case where stirring and being incubated 36~42 DEG C of states, add paraffin molten mixture, disperse 12~20min to well mixed；
S4,3.5 parts of methanol, 38 parts of dichloromethane are added, after 35~42 DEG C of insulation is uniformly dispersed, 6 parts of formic acid microcapsules of addition,
1.5 parts of oleic acid triethanolamine amine emulsifiers continue scattered 5~10min；
S5, add 2 parts of G1701 oil thickeners, 1 part of A300 gas-phase silica thickener, 0.003 part of Denatonium Benzoate, insulation
For 35~42 DEG C of scattered 5~10min to uniform, filtered discharge produces paint stripper.
In the present embodiment, 100 parts of paint strippers can also be filled in the step S5 in inhalator jar, vacuumize, puts
After valve and sealing, 6 parts of carbon dioxide of filling, 22 portions of HFO-1234ze propellants, load onto head and can obtain aerial fog type depainting
Agent.
In other embodiments, propellant can also be 8 parts of carbon dioxide, 12 parts of HFO-1234ze, or be 10 parts of dioxies
Change carbon, 5 parts of HFO-1234ze, or be 6 parts of carbon dioxide, 6 parts of HFO-1234ze, 6 parts of HFO-1234yf.
The preparation method of the 6 parts of formic acid microcapsules added in step s 4, comprises the following steps：With formic acid in embodiment 2
The preparation method of microcapsules is identical.
After above-described embodiment 1-4 products being prepared are placed at aeration-drying into storage at normal temperature 1 year, without corruption outside tank body
Eating thrown hole anomaly, is further dissected tank body, tank interior is without anomaly of getting rusty.
Comparative example 5：Except dichloromethane from 45.5 parts, formic acid microcapsules from 0 part, emulsifying agent from 0 part, thickener changes
For A300 gas-phase silicas 3 especially, remaining component is same as Example 4.In this comparative example, propellant is also changed to 28 parts of liquefaction
Oil gas.
Comparative example 6：Except dichloromethane from 38.8 parts, paraffin from 0 part, emulsifying agent be changed to 1.5 parts of sodium alkyl benzene sulfonate,
Thickener is changed to A300 gas-phase silicas 3 especially, and remaining component is same as Example 4.In this comparative example, propellant is also changed to
28 parts of liquefied petroleum gas.
Comparative example 7：Except dichloromethane from 41 parts, thickener from 0 part, emulsifying agent be changed to 1.5 parts of sodium alkyl benzene sulfonate
Outside, remaining component is same as Example 4.In this comparative example, propellant is also changed to 28 parts of liquefied petroleum gas.
The correlated performance of paint stripper made from embodiment 1~4, comparative example 5~7 is tested using following methods.
1. viscosity：Using applying -4 glasss, the viscosity of 25 DEG C of paint stripper feed liquids is measured.
2. inclined-plane turnover rate：Product is rapidly and uniformly sprayed or brushed in the zine plate (surface that size is 9cm × 12cm
Two-component PU paints coated with 150 μm of thickness), control spraying or brushing amount are in 20g or so；The tare weight of big sesame seed cake is weighed, then
By tinplate superconducting tilting suspension (with ground into 60 degree of angles) in large beaker, tinplate is taken down after 3min, is calculated in beaker
Increased paint stripper weight accounts for the percentage of middle spraying or brushing amount.
3. rate of volatilization：Using weight method, the weight claimed every time is subtracted with initial species, between the two with original species
Ratio be product rate of volatilization.At ambient temperature, by 20g aerial fog type paint strippers（100 parts of paint strippers are filled to gas
In mist tank, 6 parts of carbon dioxide of filling, 22 portions of HFO-1234yf propellants）Spray into and dry, in clean beaker；It is placed on out
The space of hair, every 1min and 10min measurement quality.
4. recoat the adhesive force of paint film：By the polyurethane baking vanish of zine plate ground chlorinated hydrocarbon paint remover products depainting, and
Rinsed well with water, spray acrylic compounds spray painting again after workpiece drying, paint film is completely dried after 72h and measures it with scratch
Adhesive force.
A kind of preparation method These parameters test result of paint stripper obtained by embodiment 1~4, comparative example 5~7 is as follows
Shown in table 1.
Table 1
As seen from Table 1, compared with comparative example 4-7, the product viscosity of the invention prepared is high, inclined-plane turnover rate is low, is advantageous to
Slow down the loss of inclined-plane paint remover products, make paint stripper small molecular low boiling point solvent there is time enough to penetrate into, dissolve, swelling
Paint film, paint removal efficiency is greatly promoted while improving product utilization rate；Exclude the projectile agent content of easily vaporization volatilization, present invention production
Product rate of volatilization is low, and depainting utilization rate is high；By depainting workpiece after water is rinsed well, dried, the paint film of coating material is brushed again
Adhesive force is strong.
5. paint removal efficiency：With reference to HG/T 2881-1997《Paint stripper paint removal efficiency determination method》.Paint kind and choose paint film
The two component epoxy PU paints and low-temperature setting baking vanish, ground that thickness is 150 μm select zine plate, obtained paint remover products are sprayed
Or brush to paint film, its paint removing effect is tested, acquired results are as shown in table 2.
Table 2
As can be seen from Table 2, the product and prior art that the present invention is prepared（Comparative example 5-7）Compare, the present invention can be quick
Swelling, paint film is loosened, the depainting time is short and efficient.
Claims (10)
1. a kind of preparation method of paint stripper, it is characterised in that comprise the following steps by weight ratio：
S1, paraffin pretreatment, by 8.0~15.0 parts of DBE mixed dibasic acids esters, 2.0~5.0 parts of propylene glycol monomethyl ethers and 0.8~
The mixing of 2.2 parts of paraffin, heats 86~110 DEG C, dissolve each other to estimate it is transparent, without block objects, that is, obtain paraffin molten mixture；
S2,1.5~3.5 parts of solvent naphthas, 18.0~28.0 parts of dimethyl carbonates are added into reaction cylinders, it is heated to 36 while stirring~
42℃；
S3, in the case where stirring and being incubated 36~42 DEG C of states, add paraffin molten mixture, disperse 12~20min to well mixed；
S4,3.5~10.0 parts of methanol, 33.0~48.0 parts of dichloromethane are added, after 35~42 DEG C of insulation is uniformly dispersed, added
3.0~8.0 parts of formic acid microcapsules, 1.5~3.5 parts of emulsifying agents continue scattered 5~10min；
S5,1.6~3.5 parts of thickeners, 0.001~0.005 part of aversive agent are added, be incubated 35~42 DEG C of scattered 5~10min to equal
Even, filtered discharge produces paint stripper.
2. a kind of preparation method of paint stripper as claimed in claim 1, it is characterised in that can also be by mistake in the step S5
Paint stripper after filter is poured into inhalator jar, is vacuumized under -0.04MPa~-0.08MPa vacuums, is put into valve and seals, fill
Propellant is filled out, head is loaded onto and obtains aerial fog type paint stripper；By weight ratio, wherein the dosage of the propellant accounts for formula always
The 15~28% of amount.
A kind of 3. preparation method of paint stripper as claimed in claim 2, it is characterised in that the propellant be carbon dioxide,
At least two in HF0-1234yf, HF0-1234ze.
4. a kind of preparation method of paint stripper as claimed in claim 1, it is characterised in that solvent naphtha is in the step S2
The composition of 120# solvent naphthas and 200# solvent naphthas, by weight ratio, 120# solvent naphthas：200# solvent naphtha=1:1~2.5.
A kind of 5. preparation method of paint stripper as claimed in claim 1, it is characterised in that formic acid microcapsules in the step S4
For solid formic acid bilayered microcapsule, its core is 1 by weight ratio by formic acid and curing agent urea:1.5 be formulated consolidate
Body formic acid, wall material first layer are ethyl cellulose, and the wall material second layer is sodium alginate.
A kind of 6. preparation method of paint stripper as claimed in claim 5, it is characterised in that the preparation side of the formic acid microcapsules
Method, comprise the following steps by weight ratio：
A. 5~8 parts of toluene, 1.5 parts of ethanol are added in the three-necked flask with reflux, 70~75 DEG C of waters bath with thermostatic control,
Under 300~500r/min rotating speeds, it is slowly added to 7~10 parts of ethyl celluloses and is dispersed to be completely dissolved, continues scattered 5~10min
Obtain dispersion liquid；Then the mixture for entering 45 parts of formic acid and curing agent urea is slowly added into dispersion liquid；In stirring
Lower slow non-solvent petroleum ether to the ethyl cellulose that adds condenses, and stops heating；Stand, naturally cool to room temperature, filtering, washing,
Drying, that is, obtain the microcapsules of ethyl cellulose cladding；
B. in the three-necked flask 20 parts of water added, 60 DEG C is heated, 6 parts of sodium alginates is slowly added to while stirring, treats alginic acid
After sodium is completely dissolved, add the microcapsules of 18 parts of ethyl celluloses cladding, continue to stir 10min, stop heating, cooling, filtering,
Drying obtains sodium alginate and the formic acid microcapsules of ethyl cellulose double-coating.
7. a kind of preparation method of paint stripper as claimed in claim 1, it is characterised in that paraffin is full essence in the step S1
Refine at least one of paraffin, OP waxes, Tissuemat E.
8. a kind of preparation method of paint stripper as claimed in claim 7, it is characterised in that paraffin is fully refined paraffin wax, OP waxes
At least one of, wherein the fusing point of fully refined paraffin wax is 56~60 DEG C, and the fusing point of OP waxes is 79~83 DEG C.
9. a kind of preparation method of paint stripper as claimed in claim 1, it is characterised in that emulsifying agent is yes in the step S4
Triethanolamine oleate.
10. a kind of preparation method of paint stripper as claimed in claim 1, it is characterised in that thickener is in the step S5
The composition of G1701 oil thickeners and Degussa hydrophily A300 gas-phase silica thickeners is risen by section of the U.S., matches somebody with somebody by weight
Than G1701 oil thickeners：A300 gas-phase silica=2~3:1；The aversive agent is Denatonium Benzoate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711155331.2A CN107641370B (en) | 2017-11-20 | 2017-11-20 | Preparation method of paint remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711155331.2A CN107641370B (en) | 2017-11-20 | 2017-11-20 | Preparation method of paint remover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107641370A true CN107641370A (en) | 2018-01-30 |
| CN107641370B CN107641370B (en) | 2020-11-27 |
Family
ID=61126053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711155331.2A Active CN107641370B (en) | 2017-11-20 | 2017-11-20 | Preparation method of paint remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107641370B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108659603A (en) * | 2018-06-12 | 2018-10-16 | 淮北宇鑫新型材料有限公司 | A kind of volatilization inhibitor and preparation method thereof of unsaturated-resin volatile monomers |
| CN115466537A (en) * | 2021-06-10 | 2022-12-13 | 嘉纳尔科技（北京）有限公司 | Paint remover capable of being used at lower temperature and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5456853A (en) * | 1993-04-23 | 1995-10-10 | Rust-Oleum Corporation | Paint stripping composition based on tetrahydrofurfuryl alcohol and oxygenated aliphatic solvents |
| CN102040880A (en) * | 2009-10-19 | 2011-05-04 | 樊继田 | Method for preparing aerosol |
| CN105670376A (en) * | 2016-03-25 | 2016-06-15 | 哈尔滨飞机工业集团有限责任公司 | Paint remover and preparation method thereof |
| CN105709673A (en) * | 2016-03-30 | 2016-06-29 | 佛山市功能高分子材料与精细化学品专业中心 | Microcapsule material for coating water-soluble organic acids as well as preparation method and application of microcapsule material |
-
2017
- 2017-11-20 CN CN201711155331.2A patent/CN107641370B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5456853A (en) * | 1993-04-23 | 1995-10-10 | Rust-Oleum Corporation | Paint stripping composition based on tetrahydrofurfuryl alcohol and oxygenated aliphatic solvents |
| CN102040880A (en) * | 2009-10-19 | 2011-05-04 | 樊继田 | Method for preparing aerosol |
| CN105670376A (en) * | 2016-03-25 | 2016-06-15 | 哈尔滨飞机工业集团有限责任公司 | Paint remover and preparation method thereof |
| CN105709673A (en) * | 2016-03-30 | 2016-06-29 | 佛山市功能高分子材料与精细化学品专业中心 | Microcapsule material for coating water-soluble organic acids as well as preparation method and application of microcapsule material |
Non-Patent Citations (3)
| Title |
|---|
| 张孔海: "《食品加工技术》", 28 February 2014, 中国轻工业出版社 * |
| 李群英: "《涂装工常用技术手册》", 31 July 2008, 上海科学技术出版社 * |
| 马庆麟: "《涂料工业手册》", 30 September 2001, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108659603A (en) * | 2018-06-12 | 2018-10-16 | 淮北宇鑫新型材料有限公司 | A kind of volatilization inhibitor and preparation method thereof of unsaturated-resin volatile monomers |
| CN115466537A (en) * | 2021-06-10 | 2022-12-13 | 嘉纳尔科技（北京）有限公司 | Paint remover capable of being used at lower temperature and preparation method thereof |
| CN115466537B (en) * | 2021-06-10 | 2023-05-26 | 嘉纳尔科技（北京）有限公司 | Paint remover capable of being used at lower temperature and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107641370B (en) | 2020-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107641371A (en) | A kind of paint stripper | |
| JP5805764B2 (en) | Carboxyester ketal removal compositions, methods for their production and their use | |
| CN102888141A (en) | Paint remover for removing epoxy primer and polyurethane finish coating | |
| CN101130647A (en) | Paint stripper | |
| US5310496A (en) | Vegetable oil based paint removing compositions | |
| CN107641370A (en) | A kind of preparation method of paint stripper | |
| CN103937322A (en) | Anhydrous paint remover composition | |
| AU2021107143A4 (en) | High-flash-point polyurethane-based anticorrosive finishing coat for industrial use | |
| US5332526A (en) | Multi-purpose paint and varnish stripper | |
| CN107760092A (en) | A kind of preparation method of aerial fog type without wax paint stripper | |
| US2438038A (en) | Method of removing paint, varnish, and lacquer films from surfaces | |
| CN107641369A (en) | A kind of aerial fog type is without wax paint stripper | |
| US8865636B2 (en) | Paint stripping compositions | |
| CN105219151A (en) | Paint remover that a kind of environmental protection is stable and preparation method thereof | |
| CN101792621B (en) | Preparation method of non-corrosive metal paint remover | |
| CN102181200B (en) | Reactive-water-based paint remover and preparation method thereof | |
| CN106833214A (en) | A kind of environment protection oil paint and preparation method thereof | |
| CN102690551A (en) | Paint remover for removing paint film on surface of tin-plated steel plate for food can and using method thereof | |
| WO2002055616A9 (en) | Paint stripper for aircraft and other multicoat systems | |
| CN106867297B (en) | Special water replacement type preservative for airplane | |
| CN100429283C (en) | General efficient paint remover | |
| CN111087875B (en) | Water-based fireproof coating for steel member and preparation method thereof | |
| CN106554654A (en) | Environment-friendly type low valent metal paint stripper and preparation method thereof | |
| US1169783A (en) | Finish-remover. | |
| CN106634591B (en) | A kind of aerosol paint and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221025 Address after: 528434, Zhongshan City, Guangdong province Fu town, South Industrial Zone Patentee after: GUANGDONG FUHE INDUSTRIAL CO.,LTD. Address before: 528429, No. 43, Cheng Cheng Road, Da Yan Industrial Zone, Huang Zhen Town, Guangdong, Zhongshan Patentee before: GUANGDONG SANVO CHEMICAL INDUSTRY TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |